SketchUp is a 3D modeling software that allows users to create, modify, and share 3D designs easily. It is widely used in various fields, including architecture, interior design, and engineering, due to its user-friendly interface and powerful tools. Users can draw shapes, add textures, and visualize their projects in a realistic manner. The software offers both a free version and a paid version with advanced features. SketchUp also supports plugins and extensions, enhancing its functionality. Additionally, users can access a vast library of pre-made models through the 3D Warehouse, making it easier to incorporate existing designs into their projects.